On Sat, Mar 14, 2009 at 08:51:02PM -0700, Gary Kline wrote: > On Sat, Mar 14, 2009 at 08:26:02AM +0100, Roland Smith wrote: > > On Fri, Mar 13, 2009 at 08:05:59PM -0700, Gary Kline wrote: > > > > lame -h -V 3 - nobody could tell the difference, it gives <200kbps > > > > bitrate > > > > lame -h -b 192 - as above > > > > lame -h -b 128 - they were able to tell difference, but not on all > > > > music/songs > > > > > > > > lame -h -b 96 - i was able to tell the difference on every song, but it > > > > wasn't really huge deal. > > > > > my hearing is exceptionally good and while call myself an > > > audiophile, having all my tunes right here at fingertips is > > > a major win. having said that, can you point me to a basic > > > tutorial on lame? > > > > man lame > > > GADGOOKS! that's no tutorial, that's *torture*. After i finally > got caught up on miised sleep, a few hours ago I read-thru and > listened-to (kttsd) the man lame. Then surfed around; then came > back to the man page and read the several examples. So: the idea > is that lame ["just"] converts WAV files to mp3.
Yep. That's what it does. It's the UNIX philosophy; do one thing and do it well. If you're not an expert you should probably stick with one of the --preset modes. E.g. '--preset medium' or '--preset standard'. That will give you variable bitrate files with good quality. > There is a gnome utility, sound-juicer than turns my CD's from > wave to ogg-vorbis. I'm happy with ogg but would prefer flac > ... but ogg is fine. mp4 is a dontknow. What I've got is good > enough for now. It looks like sound-juicer should be able to make flac files as well: http://www.burtonini.com/computing/screenshots/sj-prefs.png, probably depending on if you have the right gstreamer plugins installed. The freebsd port of sound-juicer depends on the ogg vorbis and flac gstreamer plugins. > > > i've got 1581620 blocks of mp3 @ 128kbit. > > > lectures. when i tried to cut the quality even by a bit it was > > > evident immediately. rar compresses these file to > > > 1482404 blocks very very slowly. it probably makes sense to just > > > burn the mp3 files to a dvd and be safe. > > > > There is a special codec for speech. You'll find it the > > audio/speex port. From the pkg-descr: > > > > The Speex is a patent-free, Open Source/Free Software voice codec. > > Unlike other codecs like MP3 and Ogg Vorbis, Speex is designed to > > compress voice at bitrates in the 2-45 kbps range. Possible > > applications include VoIP, Internet audio streaming, archiving of > > speech data (e.g. voice mail), and audio books. In some sense, it is > > meant to be complementary to the Ogg Vorbis codec. > > > > This might perform better at compressing lectures. > Sounds v promising, thanks. > > Given the availability of compression these days, it makes me > wonder why telephone conversations still sound so 'tinny'. But > then, that's another matter. The speakers in telephones are tiny. That's probably a large part of it. The codec used to digitize voice signals for current DECT phones, G.726 [http://en.wikipedia.org/wiki/G.726] dates from 1990, so it was limited to the technology of that time. Modern codecs like speex probably do a better job! Roland -- R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725)
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